Machine for making lock washers



A. MOORE.

MACHINE FOR MAKING LOCK WASHERS. APPLICATION FILED JULY 3,1919.

1,404,994. Patented Jan. 31,- 1922.

2 SHEETS-SHEET l.

Inn/anion 18 66-0 nay WWW A. MOORE.

MACHINE FOR MAKI NG'LOCK WASHERS. APPLICATION FILED wLY 3.1919.

1,404,994, Patented Jan. 31, 1922.

Am iiqtlfbikr mbrtrig or WORCESTER, mAssAcntTsEwTsgAssmnibg BB AFKCTfiifi-NG' COMPANY; 012* WORCESTER, ASSACHUSETTSQYA CORPORATION FMA'S'AGEUSETTS.

' A ne'ait bn fil ed July 3,

T allivhmn 2' i (meeting a Be it .khwn that I; ARLINGTON .MOOREQ a.Citizen. of th Uriited 'Stttes,' rgsicling at Wbi'Cstefl inthecqu ty ofWorcester @nd C-o mmn'wealth of Mais'Qchustts; 'havg jlm ve'nt'ed'a newand us'eiul'lmprovement 1n Machine forfMakingf LOCk W&She1$,'" of Whihthe fdllbyving'; tqgthr with thef"ac-' compahyihgfdriiwings, is a'specification.

The presilt'iiivntioil" relates to. a ma; chine fd l" hiakiiigldc'lfwdshe s'; b'y'thebon j-f tinuous coiling of a strip in spn alforrg;' anfdfl th sliccessi've s'ev' 'era'nc'e' ofthe convolution s thuscoilclf IVIdi' particularly; the max .chin of the p'rese'nt invntiohcontemplates improvements; co'nstrfiction' and operatlon ofvr Existingmachines of this class, 'Where-' byfth pyoduc tionof lock wzishrsisgreatly" incfe'ase'chth frictibl'iiincitlnt t0 the spiral tcoiliflg ofth matelifa'l' gratlfy reclilci'a nd the machifie maddadjustable,overfalfwld range; to' accommqclate; its" operatidn" tpvarious sizes' of" Washers" and Various: s ec-f tions of Washermaterial; f

the: cbnstru'ction; combination 'and anra geniefitof partsi'hereinalftr' set, forth in Fig. 1 1s 3 is an enlzifgecl-dtttil view ofthelcoiling jand cuttinQ-me'chamsms of the maf' i I r Fig; 4 isa View of thesame parts aS they apfpgir' in at plane at'right 'angl'efsf t0 Flg,

Withi a'jbjlse o'rl anvil 'portiibn' 2 Y and; spaced 1 latter iscausegl' tortravel up 11111 down; inthe Spgecification of Letters Pat'ntr he above; and other ob ect ar attained? a view'in fs'l'deejlevati'o r i 'illus j tmti-nga machine constructed in accordance'fwiththe invehti )n.g V Fig. i2 i's a similar ew showin theopr erating'parts as they appear from the 'iothe'xfi MACHINE FORMAKINGLOGKVWASVHERSR td i vhih titatihhfis cbhtihilously imp rted v, bya" belt,"'1 10't shbwng connected with any suitable Source 2 of 'pQWr. f

ateitt d qan; 3.1, 1922. "1s19. "se ia11 io. 505,522 i by army?andbbniicting link Stdpfb-h i cur the int'i'mitt e'nt operation fsuitable feed r9115 "9;" 9 and 10,} 10,1 which servet' to "eachrupgtrtikfof th head; 451a; t precltermlhed lengthof washer hi zitrialjll;

is" thus; fed"fintfmittntly iii-{each yc pfigzs PL J e-F uptin, ancl b piriomw e'di e lyim ea h1ttl rti ly relcii-prcz tihg heaclf; Within theb190 1: F17" I the mandrel. As shown'clearly in the drawings, the end ofthe bushing 19 that projects from. theblock 17 has a helical orspiraledge surface 22, for the purpose of impart ing an initial helical twistto the materlal 11 as'the latter is fed against the same.

. The, direction of feed of the material 11 is" substantially,tangential to the upper surface of mandrel 18 and across the face Q ofbushing 19, as shown in Fig. 2. Any suitable nieans, such asstraightening rolls, not

shown, may be with. advantage employed to maintain the'material in theproper aline ment as it approaches the coiling mandrel,

' but afs such straightening devices form of themselves no part of thepresent invention, a detailed reference thereof 18 unnecessary. For thepurpose of causmg the material to wrap around the mandrel 18, the"block17 is provided .witha set of'coil confining or "pressingrolls 2 1, 24,here shown as three inynumber one above and one below the mandrel 18,-and the other on the opposite side'of said mandrel from the feed of'mas'terial 11. Each roll 24 is adapted to be rotated freely about its ownaxis by the friction oflthe material 11 as the latter is fed, the rollsbeing so arranged that their pe riphera-l surfaces will tend to crowdthe material inwardly onthe mandrel 18 and cause said material to bewound in spiral form thereon. Theupper roll 24', or that one which isfirst in'the path of the ma terial, projects slightly beyond thehelical;

edge 22 of bushing 19' and at its end has I a flange 25 with a bevelledinner surface 26,

that confines the material between it and the Surface 22- v V V V v j iw The roll '24 whichv next vmakes contact with the material as thelatter winds about the mandrel, is the one directly opposite to thelineof feed, andthis roll 24 projects a greater distanceoutwardlyfromthe block 17 than the first roll, so that its bevelledflange 27 will hold the coiled material 11 inproper position on themandrel 18, at a pointf beyond thecontact therewith of the first roll.-The final roll 24 has a still greater overhang, as shown clearly in Fig.4:, thus disposing its bevelled guiding flange 28 against the coiledmaterial at a point which is "approximately one-half of a convolutionown centers on the ends of eccentric shafts or necks 29, 29 that extendtransversely through the, block 17 On the opposite side of said blockthese eccentric shaftsv 29 are equipped. with segmental adjusting arms30, 80, having elongated slots 31, 81 there in for the passageof bolts32that are'let into the rear of block 17. By loosening the bolts 32, thearms 80 may be swung in eitherdirection to turn the shafts 29 inthe.

block;" this will throw the rolls 24 either inwardly or outwardly withrespect to the mandrel 18. In this way, the rolls are ad- 11, beingthrown outwardly from the mandrel' as the thickness of the materialincreases, and viceversa, being set up close to "the mandrel whenthinmaterial is being coiled.

As shown in Fig. 5,the mandrel 18 at its end is cut away forapproximately one-quarter of its circumference to provide a substantially vertical cutting edge 33. Corresponding to this edge, thereciprocating head 1- carries a cutter"34c, which, on the descent ofthehead, cooperates with the edge 33, and procures' the severance of thesingle convolution 35 of coiled material that partly overhangs the endof the'mandrel, on the free end of the coiled strip. Inwardly'of thecutter 3 1, the head jet carries a second cutter 36 that cooperates withanother ver-' tical cutting edge 37 of the mandrel for the severance ofthe next mnermost convolution 38 of the coiled strip. Both cut-" tingoperations takeplace onthe same descent of the head 4; thefirst,resultingin the severance of the convolution 35, takes place slightly inadvance of the second by reason of the fact that the cutter is longerthan the cutter 36 and hence strikesithe coil alittle earlier.This'delay in the severance of the second convolution is necessary inorder that the first convolution may be adequately supported'while it iscut.

The feed or the mean 11 is St adjusted as to bring 'thefree end of thecoil on man drel18 almost but not quite oppositeithe point of firstseverance. the production of a correctly formed spiral This results inlock washer, with, just enough circumfel ential-gap between its ends topermitthe straightening out of the materialnndericompression. To obtainasimilar result with the secondfor any subsequent washers out at-thesame operation of-head-ehthe cutting edge 37 :is slightly offsetfrom'theedge33, as shown in Fig. 5, and the edge of cutter 36iscorrespondingly disposed slightly: at the rear of the correspondingedge of cutter 34. The'machine of my invention has been described inconnection. With the, production oftWo Washers at a single operationofthe cutting devices, but obviously theinvention is applicable to thesimultaneous production of a greater number than this, simply by theadjustment of the feed devices to provide j at each: stroke a coil ofgreater:

' length, and by the provision ofadditional stepped-cutting devices onthehead-" and e r i r f g -of material in a plurality ofplacesat onemandrel 18.

I claim, 1. In a of material, and meansoperable'ata plural-- ity ofpoints to sever simultaneously, a

plurality of the individual convolutions thus formed.

2. In a machine of the class described, means for coiling a plurality ofspiral con-j I volutions in the end of a continuous strip of ma'terial,and means-for severing sald coiled "portion at a plurality of points' p3. In a machine of the class described,

means for producing a coil, and means'for severing said coil, atoneoperation at aplurality of points.

74:. In a machine meanslfor supporting the coiled end-offa continuousstrip of materiaL-and' means cooperating Wltll said supporting means tosever said coiled end in a plurality of places" at one operation.

5;,In a machine of the class: described,

means for supporting thecoiled end of a con t nuous rSllllp of material,and means co:

- operating With said supporting means to sever said coiled end in aplurality ofplaces tinuous strip of material, and means coconvolutionsof a coil with a lapse of time between successive severances. 50s

machine of the class described,- means for spirallylcoiling a continuousstrip 15 volutions" of the l-coiled end of a strip ofmaterial, echconvolution, at'the time "of, its;severance, supported by the next ad'jacent one'.. 7 1

{coil supportingarbor and a pluralityfof cut-' of the class described, 3

VVitneSSBS:

atone operation, and at success ve times;

o7; Infa ma'chlne of the class descr bed,

means for severing in a plurality. of -places',1

at one operation, a plurality ofindividual 1 8. In a machine of theclass described, means for cutting the coiled end of a strip operation,with the cuts taken consecutively from the outer toward the innerportion of the'coil; i :1 9. 'In a machineof the class described,

means for severing consecutively, at" one operation, a plurality of theindividualcon- 10. In a machine of the class described, a

ting devices: cooperating, with said arbor and movable in unison tosever the coil at a I pluralityof places, said devices being un equallyspaced from the arbor, whereby to 1, produce. a lapse of timebetvveentheir openations. 1 I

l1. In a machine of the class describe'd,"'a

coil supporting arbor and a plurality oficut- V ting devices forcooperation with said arbor to sever at one operation a pluralityof theindividual convolutionsof the-coil, said de-i. Y

vices being out of alinement, whereby to pro; duce'a circumferentlal gapbetween the ends of each severed convolution.

' Dated this'23rd da of June,l19: 19. V AR INGTON MOORE-Lj- I I PnmornCQMBERBACHL of? 6 i

